Page Comparison

@{ID} eg. @FirstnameValidator

Annotations that start with @ followed by an ID, and that are used on object attributes are validator annotations. The ID value must be the same as any validator that is defined in the application:

Info
object Person { @FirstnameValidator("validr.msg.fname") string fname; @SurnameValidator("validr.msg.sname") string sname; }

Atomic validators

Available Atomic Validators

These are the building blocks used for creating complex validators:

validator/usage	description
`notnull();`	Check that the attribute is not null. This validator does not take any arguments.

regex

regex("^[A-Z a-z]*$");

Checks that the value conforms to a regular expression.

Info//

Allows upper & lower case and spaces.

regex("^[A-Za-

Z a

z0-

z

9 ]*$");

//

Another regex example. Alphanumeric with spaces.

regex("

^[A-Za-z0

^27[0-9]*$");

//

Another regex example. Number starting with 27

regex("^27[0-9]*$");

// Email

.

regex("\b[A-Za-z0-9._%-]+@[A-Za-z0-9.-]+[.][A-Za-z]{2,4}\b");

Another regex example. Email.
`minval(3.145);`	Checks that the value is not less than the supplied minimum value.

Infominval(3.145

maxval(6.18);

maxval

Checks that the values is not greater than the supplied maximum value.

Infomaxval(6.18

minlen(2);

minlen

Checks that a string value does not have less characters than the supplied minimum value.

Infominlen(2

maxlen(255);

maxlen

Checks that a string value does not have more characters than the supplied maximum value.

Info
maxlen(255);

Some examples:

Info

validator PersonNameValidator {

notnull(); minlen(2); maxlen(50);

}

validator AgeValidator {

notnull(); minval(0);

}

validator CTMetroPhoneNumber {

notnull(); regex(“

Creating Complex Validators

In a .mez file, under ./model/, use the validator keyword followed by a validator name, followed by a block containing atomic validators:

Code Block

language	java
title	Validator Examples
linenumbers	true

validator FirstnameValidator {
    notnull; minlen(2); maxlen(250);
}
validator AgeValidator {
    minval(0);
}
 
validator CTMetroPhoneNumber {
    notnull(); regex("021-[7..9]{7}

”);

}

");
}

Annotating Object Attributes with Validators

Annotations that start with @ followed by an ID (validator name), and that are used on object attributes are validator annotations. The ID value must be the same as any validator that is defined in the application: